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∙ 10y agoAluminum foil keeps things warm by reflecting the cold air away from the food and at the same time it reflects the heat from the food back to the food.
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What keeps food hotter plastic or aluminium foil?
I would have to say that plastic wrap is better at keeping food fresh because it is more of an air tight seal. where as aluminum foil is better at keeping food warm because it reflects heat.hope this helps
What is foil lined board used for?
foil lined board is used for the containers of ready made and takeaway meals. it can also be used for paper bags and labels. foil lined is basically good quality cardboard with analuminium foil lining. the foil retains the heat and help keep food warm.
Name a metallic nitride of a trivalent metal which on reaction with warm water gives ammonia gas?
Aluminium nitride (AlN).
Describe the test for aluminium ions?
Test: Add aqueus sodium carbonate solution, then warm it. Observation: Formation of white precipitate. Deduction: The presence of aluminum ions, Al3+ Or Test: Observation: Add aqueous sodium hydroxide White precipitate occur Add aqueous sodium hydroxide (excess) & warm White precipitate solute Test with red litmus paper Changes red - blue Deduction: The presence of aluminum ions, Al3+
What type of cup keeps water warm the longest-plastic paper styrofoam or glass and why results?
styraphoam
How does aluminum foil keep things cooler?
Aluminumm foil paper keeps many things warm. It keeps things warm because instead of absorbing the heat that wants to get into the material you wrapped foil paper on, the foil paper refelcts back so that the heat does not absorb into the object or material.
What keeps food hotter plastic or aluminium foil?
I would have to say that plastic wrap is better at keeping food fresh because it is more of an air tight seal. where as aluminum foil is better at keeping food warm because it reflects heat.hope this helps
Which materials keep things warm?
Cotton keeps most things warm.yarn keeps things warm to
Is tin foil a good conductor of heat?
There are three different ways of transferring heat. These are by radiation, conduction and convection. The sun's rays heat the surface of the earth by radiation. If you were to wrap a ice cube in Aluminium foil and place it in hot sunlight it would take longer to melt because the sun's radiation would be reflected. However if placed an ice cube wrapped in foil on a hot plate, it would melt just as quickly as if there was no foil. This is because in this case Conduction is the main way heat is passed to the cube and aluminum is a good conductor.
How does reflectivity of the aluminium foil influence to keep the food warm?
Heat can be transferred by 3 mechanisms: conduction, convection, and radiation. When food is covered by aluminum foil, the foil does reduce convection a bit because the air next to the food is trapped there. A bigger effect is the reflection of the heat by the foil. Rather than continuing on its path to dissipate into the surroundings, the heat is reflected by the foil back into the food, thus helping to keep it warm.
How do things stay warm?
Things stay warm by preventing the thing it's keeping warm from losing heat. Some things that keep things warm are wool, tin foil, wood, glass, plastic, and rubber. Things that keep other things warm or cool are called insulators.
Is foil good for keeping something warm?
Foil itself will not warm it, it has to already be warm for it to insulate it.
Does wood keep an object warm or cold?
yes, wood is an insulator so it keeps things warm.
What keep things colder aluminum foil or plastic wrap?
If the object is warm to begin with, aluminium foil, as it is a metal and so will conduct the heat out into the environment. (Metals feel cold because they are good conductors and so conduct the heat out of you when you touch them). If the object is cold to begin with, plastic wrap, as it is a poor donductor and will not allow heat from the environment to enter the object easily. (Plastics feel warm because they do not conduct the heat away when you touch them).
What keeps penguiens warm?
what keeps penguens warm
Why does foil keep us warm?
heat keep us warm :)
Why is aluminum foil used to keep food warm though its good conductor of heat?
you need to warp the food to prevent the heat from escaping. aluminum foil is used because it acts as an heating element to reheat the food and the heat source for the heating precess comes from the food itself. www.photoengineering.webs.com
